func (vm *Vm) MapUserMemory(
start Paddr,
size uint64,
mmap []byte) error {
// See NOTE above about read-only memory.
// As we will not support it for the moment,
// we do not expose it through the interface.
// Leveraging that feature will likely require
// a small amount of re-architecting in any case.
var region C.struct_kvm_userspace_memory_region
region.slot = C.__u32(vm.mem_region)
region.flags = C.__u32(0)
region.guest_phys_addr = C.__u64(start)
region.memory_size = C.__u64(size)
region.userspace_addr = C.__u64(uintptr(unsafe.Pointer(&mmap[0])))
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlSetUserMemoryRegion),
uintptr(unsafe.Pointer(®ion)))
if e != 0 {
return e
}
// We're set, bump our slot.
vm.mem_region += 1
return nil
}
func (vm *Vm) Interrupt(
irq Irq,
level bool) error {
// Prepare the IRQ.
var irq_level C.struct_irq_level
irq_level.irq = C.__u32(irq)
if level {
irq_level.level = C.__u32(1)
} else {
irq_level.level = C.__u32(0)
}
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlIrqLine),
uintptr(unsafe.Pointer(&irq_level)))
if e != 0 {
return e
}
return nil
}
// sched_setattr(2)
func SetAttr(pid int, attr SchedAttr) error {
cAttr := C.struct_sched_attr{
C.__u32(C.SCHED_ATTR_SIZE),
C.__u32(attr.Policy),
C.__u64(attr.Flags),
C.__s32(attr.Nice),
C.__u32(attr.Priority),
C.__u64(attr.Runtime.Nanoseconds()),
C.__u64(attr.Deadline.Nanoseconds()),
C.__u64(attr.Period.Nanoseconds()),
}
_, err := C.sched_setattr(C.pid_t(pid), &cAttr, C.uint(0))
return err
}
// GetQuota - get the quota limits of a directory that was configured with SetQuota
func (q *QuotaCtl) GetQuota(targetPath string, quota *Quota) error {
projectID, ok := q.quotas[targetPath]
if !ok {
return fmt.Errorf("quota not found for path : %s", targetPath)
}
//
// get the quota limit for the container's project id
//
var d C.fs_disk_quota_t
var cs = C.CString(q.backingFsBlockDev)
defer C.free(unsafe.Pointer(cs))
_, _, errno := syscall.Syscall6(syscall.SYS_QUOTACTL, C.Q_XGETPQUOTA,
uintptr(unsafe.Pointer(cs)), uintptr(C.__u32(projectID)),
uintptr(unsafe.Pointer(&d)), 0, 0)
if errno != 0 {
return fmt.Errorf("Failed to get quota limit for projid %d on %s: %v",
projectID, q.backingFsBlockDev, errno.Error())
}
quota.Size = uint64(d.d_blk_hardlimit) * 512
return nil
}
func (vcpu *Vcpu) SetStepping(step bool) error {
var guest_debug C.struct_kvm_guest_debug
if step == vcpu.is_stepping {
// Already set.
return nil
} else if step {
guest_debug.control = C.__u32(C.IoctlGuestDebugEnable)
} else {
guest_debug.control = 0
}
// Execute our debug ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetGuestDebug),
uintptr(unsafe.Pointer(&guest_debug)))
if e != 0 {
return e
}
// We're okay.
vcpu.is_stepping = step
return nil
}
func (vcpu *Vcpu) SetFpuState(state Fpu) error {
// Prepare our data.
var kvm_fpu C.struct_kvm_fpu
for i := 0; i < len(state.FPR); i += 1 {
for j := 0; j < len(state.FPR[i]); j += 1 {
kvm_fpu.fpr[i][j] = C.__u8(state.FPR[i][j])
}
}
kvm_fpu.fcw = C.__u16(state.FCW)
kvm_fpu.fsw = C.__u16(state.FSW)
kvm_fpu.ftwx = C.__u8(state.FTWX)
kvm_fpu.last_opcode = C.__u16(state.LastOpcode)
kvm_fpu.last_ip = C.__u64(state.LastIp)
kvm_fpu.last_dp = C.__u64(state.LastDp)
for i := 0; i < len(state.XMM); i += 1 {
for j := 0; j < len(state.XMM[i]); j += 1 {
kvm_fpu.xmm[i][j] = C.__u8(state.XMM[i][j])
}
}
kvm_fpu.mxcsr = C.__u32(state.MXCSR)
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetFpu),
uintptr(unsafe.Pointer(&kvm_fpu)))
if e != 0 {
return e
}
return nil
}
func (vcpu *Vcpu) SetCpuid(cpuids []Cpuid) error {
// Initialize our cpuid data.
cpuidData := make([]byte, PageSize, PageSize)
for i, cpuid := range cpuids {
e := C.cpuid_set(
unsafe.Pointer(&cpuidData[0]),
C.int(PageSize),
C.int(i),
C.__u32(cpuid.Function),
C.__u32(cpuid.Index),
C.__u32(cpuid.Flags),
C.__u32(cpuid.EAX),
C.__u32(cpuid.EBX),
C.__u32(cpuid.ECX),
C.__u32(cpuid.EDX))
if e != 0 {
return syscall.Errno(e)
}
}
// Set our vcpuid.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetCpuid),
uintptr(unsafe.Pointer(&cpuidData[0])))
if e != 0 {
return e
}
// We're good.
vcpu.cpuid = cpuids
return nil
}
func (vcpu *Vcpu) SetXcrs(xcrs []Xcr) error {
// Build our parameter.
var kvm_xcrs C.struct_kvm_xcrs
kvm_xcrs.nr_xcrs = C.__u32(len(xcrs))
for i, xcr := range xcrs {
kvm_xcrs.xcrs[i].xcr = C.__u32(xcr.Id)
kvm_xcrs.xcrs[i].value = C.__u64(xcr.Value)
}
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetXcrs),
uintptr(unsafe.Pointer(&kvm_xcrs)))
if e != 0 {
return e
}
return nil
}
func (vm *Vm) SetEventFd(
eventfd *EventFd,
paddr Paddr,
size uint,
is_pio bool,
unbind bool,
has_value bool,
value uint64) error {
var ioeventfd C.struct_kvm_ioeventfd
ioeventfd.addr = C.__u64(paddr)
ioeventfd.len = C.__u32(size)
ioeventfd.fd = C.__s32(eventfd.Fd())
ioeventfd.datamatch = C.__u64(value)
if is_pio {
ioeventfd.flags |= C.__u32(C.IoctlIoEventFdFlagPio)
}
if unbind {
ioeventfd.flags |= C.__u32(C.IoctlIoEventFdFlagDeassign)
}
if has_value {
ioeventfd.flags |= C.__u32(C.IoctlIoEventFdFlagDatamatch)
}
// Bind / unbind the eventfd.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlIoEventFd),
uintptr(unsafe.Pointer(&ioeventfd)))
if e != 0 {
return e
}
// Success.
return nil
}
func (vm *Vm) SignalMSI(
addr Paddr,
data uint32,
flags uint32) error {
// Prepare the MSI.
var msi C.struct_kvm_msi
msi.address_lo = C.__u32(addr & 0xffffffff)
msi.address_hi = C.__u32(addr >> 32)
msi.data = C.__u32(data)
msi.flags = C.__u32(flags)
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlSignalMsi),
uintptr(unsafe.Pointer(&msi)))
if e != 0 {
return e
}
return nil
}
func (vcpu *Vcpu) SetMpState(state MpState) error {
// Execute the ioctl.
var kvm_state C.struct_kvm_mp_state
kvm_state.mp_state = C.__u32(state)
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetMpState),
uintptr(unsafe.Pointer(&kvm_state)))
if e != 0 {
return e
}
return nil
}
func (vm *Vm) SetClock(clock Clock) error {
// Execute the ioctl.
var kvm_clock_data C.struct_kvm_clock_data
kvm_clock_data.clock = C.__u64(clock.Time)
kvm_clock_data.flags = C.__u32(clock.Flags)
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlSetClock),
uintptr(unsafe.Pointer(&kvm_clock_data)))
if e != 0 {
return e
}
return nil
}
func nativeCpuid(function uint32) Cpuid {
var eax C.__u32
var ebx C.__u32
var ecx C.__u32
var edx C.__u32
// Query our native function.
C.cpuid_native(C.__u32(function), &eax, &ebx, &ecx, &edx)
// Transform.
return Cpuid{
Function: function,
EAX: uint32(eax),
EBX: uint32(ebx),
ECX: uint32(ecx),
EDX: uint32(edx)}
}
func (vcpu *Vcpu) SetXSave(state XSave) error {
// Execute the ioctl.
var kvm_xsave C.struct_kvm_xsave
for i := 0; i < len(state.Region); i += 1 {
kvm_xsave.region[i] = C.__u32(state.Region[i])
}
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetXSave),
uintptr(unsafe.Pointer(&kvm_xsave)))
if e != 0 {
return e
}
return nil
}
func (vchannel *VirtioChannel) ProcessOutgoing() error {
for buf := range vchannel.outgoing {
// The device is active.
vchannel.VirtioDevice.Acquire()
// Put in the virtqueue.
vchannel.Debug(
"vqueue#%d outgoing slot [%d]",
vchannel.Channel,
buf.index)
var evt_interrupt C.int
var no_interrupt C.int
C.vring_put_buf(
&vchannel.vring,
C.__u16(buf.index),
C.__u32(buf.length),
&evt_interrupt,
&no_interrupt)
if vchannel.HasFeatures(VirtioRingFEventIdx) {
// This is used the event index.
if evt_interrupt != C.int(0) {
// Interrupt the guest.
vchannel.Interrupt(true)
}
} else {
// We have no event index.
if no_interrupt == C.int(0) {
// Interrupt the guest.
vchannel.Interrupt(true)
}
}
// Remove from our outstanding list.
delete(vchannel.Outstanding, uint16(buf.index))
// We can release until the next buffer comes back.
vchannel.VirtioDevice.Release()
}
return nil
}
func (vm *Vm) CreatePit() error {
// Prepare the PIT config.
// The only flag supported at the time of writing
// was KVM_PIT_SPEAKER_DUMMY, which I really have no
// interest in supporting.
var pit C.struct_kvm_pit_config
pit.flags = C.__u32(0)
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vm.fd),
uintptr(C.IoctlCreatePit2),
uintptr(unsafe.Pointer(&pit)))
if e != 0 {
return e
}
return nil
}
func (vcpu *Vcpu) SetMsr(index uint32, value uint64) error {
// Setup our structure.
data := make([]byte, C.msr_size(), C.msr_size())
// Set our index and value.
C.msr_set(unsafe.Pointer(&data[0]), C.__u32(index), C.__u64(value))
// Execute our ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetMsrs),
uintptr(unsafe.Pointer(&data[0])))
if e != 0 {
return e
}
return nil
}
func (vcpu *Vcpu) GetMsr(index uint32) (uint64, error) {
// Setup our structure.
data := make([]byte, C.msr_size(), C.msr_size())
// Set our index to retrieve.
C.msr_set(unsafe.Pointer(&data[0]), C.__u32(index), C.__u64(0))
// Execute our ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlGetMsrs),
uintptr(unsafe.Pointer(&data[0])))
if e != 0 {
return 0, e
}
// Return our value.
return uint64(C.msr_get(unsafe.Pointer(&data[0]))), nil
}
// setProjectQuota - set the quota for project id on xfs block device
func setProjectQuota(backingFsBlockDev string, projectID uint32, quota Quota) error {
var d C.fs_disk_quota_t
d.d_version = C.FS_DQUOT_VERSION
d.d_id = C.__u32(projectID)
d.d_flags = C.XFS_PROJ_QUOTA
d.d_fieldmask = C.FS_DQ_BHARD | C.FS_DQ_BSOFT
d.d_blk_hardlimit = C.__u64(quota.Size / 512)
d.d_blk_softlimit = d.d_blk_hardlimit
var cs = C.CString(backingFsBlockDev)
defer C.free(unsafe.Pointer(cs))
_, _, errno := syscall.Syscall6(syscall.SYS_QUOTACTL, C.Q_XSETPQLIM,
uintptr(unsafe.Pointer(cs)), uintptr(d.d_id),
uintptr(unsafe.Pointer(&d)), 0, 0)
if errno != 0 {
return fmt.Errorf("Failed to set quota limit for projid %d on %s: %v",
projectID, backingFsBlockDev, errno.Error())
}
return nil
}
// setProjectID - set the project id of path on xfs
func setProjectID(targetPath string, projectID uint32) error {
dir, err := openDir(targetPath)
if err != nil {
return err
}
defer closeDir(dir)
var fsx C.struct_fsxattr
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, getDirFd(dir), C.FS_IOC_FSGETXATTR,
uintptr(unsafe.Pointer(&fsx)))
if errno != 0 {
return fmt.Errorf("Failed to get projid for %s: %v", targetPath, errno.Error())
}
fsx.fsx_projid = C.__u32(projectID)
fsx.fsx_xflags |= C.FS_XFLAG_PROJINHERIT
_, _, errno = syscall.Syscall(syscall.SYS_IOCTL, getDirFd(dir), C.FS_IOC_FSSETXATTR,
uintptr(unsafe.Pointer(&fsx)))
if errno != 0 {
return fmt.Errorf("Failed to set projid for %s: %v", targetPath, errno.Error())
}
return nil
}
func findRootGen(dir *C.DIR) (uint64, error) {
fd := getDirFd(dir)
var maxFound uint64 = 0
var inoArgs C.struct_btrfs_ioctl_ino_lookup_args
var args C.struct_btrfs_ioctl_search_args
var sk *C.struct_btrfs_ioctl_search_key = &args.key
var sh C.struct_btrfs_ioctl_search_header
inoArgs.objectid = C.BTRFS_FIRST_FREE_OBJECTID
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, fd, C.BTRFS_IOC_INO_LOOKUP, uintptr(unsafe.Pointer(&inoArgs)))
if errno != 0 {
return 0, fmt.Errorf("Failed to perform the inode lookup %v", errno.Error())
}
sk.tree_id = 1
sk.min_objectid = inoArgs.treeid
sk.max_objectid = inoArgs.treeid
sk.max_type = C.BTRFS_ROOT_ITEM_KEY
sk.min_type = C.BTRFS_ROOT_ITEM_KEY
sk.max_offset = math.MaxUint64
sk.max_transid = math.MaxUint64
sk.nr_items = 4096
for {
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, fd, C.BTRFS_IOC_TREE_SEARCH, uintptr(unsafe.Pointer(&args)))
if errno != 0 {
return 0, fmt.Errorf("Failed to perform the search %v", errno.Error())
}
if sk.nr_items == 0 {
break
}
var off uintptr = 0
for i := C.__u32(0); i < sk.nr_items; i++ {
var item *C.struct_btrfs_root_item
C.memcpy(unsafe.Pointer(&sh), addptr(unsafe.Pointer(&args.buf), off), C.sizeof_struct_btrfs_ioctl_search_header)
off += C.sizeof_struct_btrfs_ioctl_search_header
item = (*C.struct_btrfs_root_item)(unsafe.Pointer(&args.buf[off]))
off += uintptr(sh.len)
sk.min_objectid = sh.objectid
sk.min_type = sh._type
sk.min_offset = sh.offset
if sh.objectid > inoArgs.treeid {
break
}
if sh.objectid == inoArgs.treeid && sh._type == C.BTRFS_ROOT_ITEM_KEY {
rootGeneration := item.generation
if maxFound < uint64(rootGeneration) {
maxFound = uint64(rootGeneration)
}
}
}
if sk.min_offset < math.MaxUint64 {
sk.min_offset++
} else {
break
}
if sk.min_type != C.BTRFS_ROOT_ITEM_KEY {
break
}
if sk.min_objectid != inoArgs.treeid {
break
}
}
return maxFound, nil
}
func (vcpu *Vcpu) SetSegment(
seg Segment,
val SegmentValue,
sync bool) error {
err := vcpu.refreshSRegs(true)
if err != nil {
return err
}
switch seg {
case CS:
vcpu.sregs.cs.base = C.__u64(val.Base)
vcpu.sregs.cs.limit = C.__u32(val.Limit)
vcpu.sregs.cs.selector = C.__u16(val.Selector)
vcpu.sregs.cs._type = C.__u8(val.Type)
vcpu.sregs.cs.present = C.__u8(val.Present)
vcpu.sregs.cs.dpl = C.__u8(val.Dpl)
vcpu.sregs.cs.db = C.__u8(val.Db)
vcpu.sregs.cs.s = C.__u8(val.S)
vcpu.sregs.cs.l = C.__u8(val.L)
vcpu.sregs.cs.g = C.__u8(val.G)
vcpu.sregs.cs.avl = C.__u8(val.Avl)
vcpu.sregs.cs.unusable = C.__u8(^val.Present & 0x1)
case DS:
vcpu.sregs.ds.base = C.__u64(val.Base)
vcpu.sregs.ds.limit = C.__u32(val.Limit)
vcpu.sregs.ds.selector = C.__u16(val.Selector)
vcpu.sregs.ds._type = C.__u8(val.Type)
vcpu.sregs.ds.present = C.__u8(val.Present)
vcpu.sregs.ds.dpl = C.__u8(val.Dpl)
vcpu.sregs.ds.db = C.__u8(val.Db)
vcpu.sregs.ds.s = C.__u8(val.S)
vcpu.sregs.ds.l = C.__u8(val.L)
vcpu.sregs.ds.g = C.__u8(val.G)
vcpu.sregs.ds.avl = C.__u8(val.Avl)
vcpu.sregs.ds.unusable = C.__u8(^val.Present & 0x1)
case ES:
vcpu.sregs.es.base = C.__u64(val.Base)
vcpu.sregs.es.limit = C.__u32(val.Limit)
vcpu.sregs.es.selector = C.__u16(val.Selector)
vcpu.sregs.es._type = C.__u8(val.Type)
vcpu.sregs.es.present = C.__u8(val.Present)
vcpu.sregs.es.dpl = C.__u8(val.Dpl)
vcpu.sregs.es.db = C.__u8(val.Db)
vcpu.sregs.es.s = C.__u8(val.S)
vcpu.sregs.es.l = C.__u8(val.L)
vcpu.sregs.es.g = C.__u8(val.G)
vcpu.sregs.es.avl = C.__u8(val.Avl)
vcpu.sregs.es.unusable = C.__u8(^val.Present & 0x1)
case FS:
vcpu.sregs.fs.base = C.__u64(val.Base)
vcpu.sregs.fs.limit = C.__u32(val.Limit)
vcpu.sregs.fs.selector = C.__u16(val.Selector)
vcpu.sregs.fs._type = C.__u8(val.Type)
vcpu.sregs.fs.present = C.__u8(val.Present)
vcpu.sregs.fs.dpl = C.__u8(val.Dpl)
vcpu.sregs.fs.db = C.__u8(val.Db)
vcpu.sregs.fs.s = C.__u8(val.S)
vcpu.sregs.fs.l = C.__u8(val.L)
vcpu.sregs.fs.g = C.__u8(val.G)
vcpu.sregs.fs.avl = C.__u8(val.Avl)
vcpu.sregs.fs.unusable = C.__u8(^val.Present & 0x1)
case GS:
vcpu.sregs.gs.base = C.__u64(val.Base)
vcpu.sregs.gs.limit = C.__u32(val.Limit)
vcpu.sregs.gs.selector = C.__u16(val.Selector)
vcpu.sregs.gs._type = C.__u8(val.Type)
vcpu.sregs.gs.present = C.__u8(val.Present)
vcpu.sregs.gs.dpl = C.__u8(val.Dpl)
vcpu.sregs.gs.db = C.__u8(val.Db)
vcpu.sregs.gs.s = C.__u8(val.S)
vcpu.sregs.gs.l = C.__u8(val.L)
vcpu.sregs.gs.g = C.__u8(val.G)
vcpu.sregs.gs.avl = C.__u8(val.Avl)
vcpu.sregs.gs.unusable = C.__u8(^val.Present & 0x1)
case SS:
vcpu.sregs.ss.base = C.__u64(val.Base)
vcpu.sregs.ss.limit = C.__u32(val.Limit)
vcpu.sregs.ss.selector = C.__u16(val.Selector)
vcpu.sregs.ss._type = C.__u8(val.Type)
vcpu.sregs.ss.present = C.__u8(val.Present)
vcpu.sregs.ss.dpl = C.__u8(val.Dpl)
vcpu.sregs.ss.db = C.__u8(val.Db)
vcpu.sregs.ss.s = C.__u8(val.S)
vcpu.sregs.ss.l = C.__u8(val.L)
vcpu.sregs.ss.g = C.__u8(val.G)
vcpu.sregs.ss.avl = C.__u8(val.Avl)
vcpu.sregs.ss.unusable = C.__u8(^val.Present & 0x1)
case TR:
vcpu.sregs.tr.base = C.__u64(val.Base)
vcpu.sregs.tr.limit = C.__u32(val.Limit)
vcpu.sregs.tr.selector = C.__u16(val.Selector)
vcpu.sregs.tr._type = C.__u8(val.Type)
vcpu.sregs.tr.present = C.__u8(val.Present)
vcpu.sregs.tr.dpl = C.__u8(val.Dpl)
vcpu.sregs.tr.db = C.__u8(val.Db)
vcpu.sregs.tr.s = C.__u8(val.S)
vcpu.sregs.tr.l = C.__u8(val.L)
vcpu.sregs.tr.g = C.__u8(val.G)
vcpu.sregs.tr.avl = C.__u8(val.Avl)
vcpu.sregs.tr.unusable = C.__u8(^val.Present & 0x1)
case LDT:
vcpu.sregs.ldt.base = C.__u64(val.Base)
vcpu.sregs.ldt.limit = C.__u32(val.Limit)
vcpu.sregs.ldt.selector = C.__u16(val.Selector)
vcpu.sregs.ldt._type = C.__u8(val.Type)
vcpu.sregs.ldt.present = C.__u8(val.Present)
vcpu.sregs.ldt.dpl = C.__u8(val.Dpl)
vcpu.sregs.ldt.db = C.__u8(val.Db)
vcpu.sregs.ldt.s = C.__u8(val.S)
vcpu.sregs.ldt.l = C.__u8(val.L)
vcpu.sregs.ldt.g = C.__u8(val.G)
vcpu.sregs.ldt.avl = C.__u8(val.Avl)
vcpu.sregs.ldt.unusable = C.__u8(^val.Present & 0x1)
default:
return UnknownRegister
}
if sync {
err = vcpu.flushSRegs()
if err != nil {
return err
}
}
return nil
}
func (acpi *Acpi) Attach(vm *platform.Vm, model *Model) error {
// Do we already have data?
rebuild := true
if acpi.Data == nil {
// Create our data.
acpi.Data = make([]byte, platform.PageSize, platform.PageSize)
} else {
// Align our data.
// This is necessary because we map this in
// directly. It's possible that the data was
// decoded and refers to the middle of some
// larger array somewhere, and isn't aligned.
acpi.Data = platform.AlignBytes(acpi.Data)
rebuild = false
}
// Allocate our memory block.
err := model.Reserve(
vm,
acpi,
MemoryTypeAcpi,
acpi.Addr,
platform.PageSize,
acpi.Data)
if err != nil {
return err
}
// Already done.
if !rebuild {
return nil
}
// Find our APIC information.
// This will find the APIC device if it
// is attached, otherwise the MADT table
// will unfortunately have be a bit invalid.
var IOApic platform.Paddr
var LApic platform.Paddr
for _, device := range model.Devices() {
apic, ok := device.(*Apic)
if ok {
IOApic = apic.IOApic
LApic = apic.LApic
break
}
}
// Load the MADT.
madt_bytes := C.build_madt(
unsafe.Pointer(&acpi.Data[0]),
C.__u32(LApic),
C.int(len(vm.Vcpus())),
C.__u32(IOApic),
C.__u32(0), // I/O APIC interrupt?
)
acpi.Debug("MADT %x @ %x", madt_bytes, acpi.Addr)
// Align offset.
offset := madt_bytes
if offset%64 != 0 {
offset += 64 - (offset % 64)
}
// Load the DSDT.
dsdt_address := uint64(acpi.Addr) + uint64(offset)
dsdt_bytes := C.build_dsdt(
unsafe.Pointer(&acpi.Data[int(offset)]),
)
acpi.Debug("DSDT %x @ %x", dsdt_bytes, dsdt_address)
// Align offset.
offset += dsdt_bytes
if offset%64 != 0 {
offset += 64 - (offset % 64)
}
// Load the XSDT.
xsdt_address := uint64(acpi.Addr) + uint64(offset)
xsdt_bytes := C.build_xsdt(
unsafe.Pointer(&acpi.Data[int(offset)]),
C.__u64(acpi.Addr), // MADT address.
)
acpi.Debug("XSDT %x @ %x", xsdt_bytes, xsdt_address)
// Align offset.
offset += xsdt_bytes
if offset%64 != 0 {
offset += 64 - (offset % 64)
}
// Load the RSDT.
rsdt_address := uint64(acpi.Addr) + uint64(offset)
rsdt_bytes := C.build_rsdt(
unsafe.Pointer(&acpi.Data[int(offset)]),
C.__u32(acpi.Addr), // MADT address.
)
acpi.Debug("RSDT %x @ %x", rsdt_bytes, rsdt_address)
// Align offset.
offset += rsdt_bytes
if offset%64 != 0 {
offset += 64 - (offset % 64)
}
// Load the RSDP.
rsdp_address := uint64(acpi.Addr) + uint64(offset)
rsdp_bytes := C.build_rsdp(
unsafe.Pointer(&acpi.Data[int(offset)]),
C.__u32(rsdt_address), // RSDT address.
C.__u64(xsdt_address), // XSDT address.
)
acpi.Debug("RSDP %x @ %x", rsdp_bytes, rsdp_address)
// Everything went okay.
return nil
}
func (vcpu *Vcpu) SetEvents(events Events) error {
// Prepare our state.
var kvm_events C.struct_kvm_vcpu_events
if events.NmiPending {
kvm_events.nmi.pending = C.__u8(1)
} else {
kvm_events.nmi.pending = C.__u8(0)
}
if events.NmiMasked {
kvm_events.nmi.masked = C.__u8(1)
} else {
kvm_events.nmi.masked = C.__u8(0)
}
kvm_events.sipi_vector = C.__u32(events.SipiVector)
kvm_events.flags = C.__u32(events.Flags)
if events.Exception != nil {
kvm_events.exception.injected = C.__u8(1)
kvm_events.exception.nr = C.__u8(events.Exception.Number)
if events.Exception.ErrorCode != nil {
kvm_events.exception.has_error_code = C.__u8(1)
kvm_events.exception.error_code = C.__u32(*events.Exception.ErrorCode)
} else {
kvm_events.exception.has_error_code = C.__u8(0)
kvm_events.exception.error_code = C.__u32(0)
}
} else {
kvm_events.exception.injected = C.__u8(0)
kvm_events.exception.nr = C.__u8(0)
kvm_events.exception.has_error_code = C.__u8(0)
kvm_events.exception.error_code = C.__u32(0)
}
if events.Interrupt != nil {
kvm_events.interrupt.injected = C.__u8(1)
kvm_events.interrupt.nr = C.__u8(events.Interrupt.Number)
if events.Interrupt.Soft {
kvm_events.interrupt.soft = C.__u8(1)
} else {
kvm_events.interrupt.soft = C.__u8(0)
}
if events.Interrupt.Shadow {
kvm_events.interrupt.shadow = C.__u8(1)
} else {
kvm_events.interrupt.shadow = C.__u8(0)
}
} else {
kvm_events.interrupt.injected = C.__u8(0)
kvm_events.interrupt.nr = C.__u8(0)
kvm_events.interrupt.soft = C.__u8(0)
kvm_events.interrupt.shadow = C.__u8(0)
}
// Execute the ioctl.
_, _, e := syscall.Syscall(
syscall.SYS_IOCTL,
uintptr(vcpu.fd),
uintptr(C.IoctlSetVcpuEvents),
uintptr(unsafe.Pointer(&kvm_events)))
if e != 0 {
return e
}
return nil
}